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Side by Side Diff: silk/float/find_pred_coefs_FLP.c

Issue 882843002: Update to opus-HEAD-66611f1. (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/opus.git@master
Patch Set: Add the contents of Makefile.mips back. Created 5 years, 10 months ago
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1 /*********************************************************************** 1 /***********************************************************************
2 Copyright (c) 2006-2011, Skype Limited. All rights reserved. 2 Copyright (c) 2006-2011, Skype Limited. All rights reserved.
3 Redistribution and use in source and binary forms, with or without 3 Redistribution and use in source and binary forms, with or without
4 modification, are permitted provided that the following conditions 4 modification, are permitted provided that the following conditions
5 are met: 5 are met:
6 - Redistributions of source code must retain the above copyright notice, 6 - Redistributions of source code must retain the above copyright notice,
7 this list of conditions and the following disclaimer. 7 this list of conditions and the following disclaimer.
8 - Redistributions in binary form must reproduce the above copyright 8 - Redistributions in binary form must reproduce the above copyright
9 notice, this list of conditions and the following disclaimer in the 9 notice, this list of conditions and the following disclaimer in the
10 documentation and/or other materials provided with the distribution. 10 documentation and/or other materials provided with the distribution.
(...skipping 49 matching lines...) Expand 10 before | Expand all | Expand 10 after
60 /* VOICED */ 60 /* VOICED */
61 /**********/ 61 /**********/
62 silk_assert( psEnc->sCmn.ltp_mem_length - psEnc->sCmn.predictLPCOrder >= psEncCtrl->pitchL[ 0 ] + LTP_ORDER / 2 ); 62 silk_assert( psEnc->sCmn.ltp_mem_length - psEnc->sCmn.predictLPCOrder >= psEncCtrl->pitchL[ 0 ] + LTP_ORDER / 2 );
63 63
64 /* LTP analysis */ 64 /* LTP analysis */
65 silk_find_LTP_FLP( psEncCtrl->LTPCoef, WLTP, &psEncCtrl->LTPredCodGain, res_pitch, 65 silk_find_LTP_FLP( psEncCtrl->LTPCoef, WLTP, &psEncCtrl->LTPredCodGain, res_pitch,
66 psEncCtrl->pitchL, Wght, psEnc->sCmn.subfr_length, psEnc->sCmn.nb_su bfr, psEnc->sCmn.ltp_mem_length ); 66 psEncCtrl->pitchL, Wght, psEnc->sCmn.subfr_length, psEnc->sCmn.nb_su bfr, psEnc->sCmn.ltp_mem_length );
67 67
68 /* Quantize LTP gain parameters */ 68 /* Quantize LTP gain parameters */
69 silk_quant_LTP_gains_FLP( psEncCtrl->LTPCoef, psEnc->sCmn.indices.LTPInd ex, &psEnc->sCmn.indices.PERIndex, 69 silk_quant_LTP_gains_FLP( psEncCtrl->LTPCoef, psEnc->sCmn.indices.LTPInd ex, &psEnc->sCmn.indices.PERIndex,
70 &psEnc->sCmn.sum_log_gain_Q7, WLTP, psEnc->sCmn.mu_LTP_Q9, psEnc->sC mn.LTPQuantLowComplexity, psEnc->sCmn.nb_subfr ); 70 &psEnc->sCmn.sum_log_gain_Q7, WLTP, psEnc->sCmn.mu_LTP_Q9, psEnc->sC mn.LTPQuantLowComplexity, psEnc->sCmn.nb_subfr,
71 psEnc->sCmn.arch );
71 72
72 /* Control LTP scaling */ 73 /* Control LTP scaling */
73 silk_LTP_scale_ctrl_FLP( psEnc, psEncCtrl, condCoding ); 74 silk_LTP_scale_ctrl_FLP( psEnc, psEncCtrl, condCoding );
74 75
75 /* Create LTP residual */ 76 /* Create LTP residual */
76 silk_LTP_analysis_filter_FLP( LPC_in_pre, x - psEnc->sCmn.predictLPCOrde r, psEncCtrl->LTPCoef, 77 silk_LTP_analysis_filter_FLP( LPC_in_pre, x - psEnc->sCmn.predictLPCOrde r, psEncCtrl->LTPCoef,
77 psEncCtrl->pitchL, invGains, psEnc->sCmn.subfr_length, psEnc->sCmn.n b_subfr, psEnc->sCmn.predictLPCOrder ); 78 psEncCtrl->pitchL, invGains, psEnc->sCmn.subfr_length, psEnc->sCmn.n b_subfr, psEnc->sCmn.predictLPCOrder );
78 } else { 79 } else {
79 /************/ 80 /************/
80 /* UNVOICED */ 81 /* UNVOICED */
81 /************/ 82 /************/
82 /* Create signal with prepended subframes, scaled by inverse gains */ 83 /* Create signal with prepended subframes, scaled by inverse gains */
83 x_ptr = x - psEnc->sCmn.predictLPCOrder; 84 x_ptr = x - psEnc->sCmn.predictLPCOrder;
84 x_pre_ptr = LPC_in_pre; 85 x_pre_ptr = LPC_in_pre;
85 for( i = 0; i < psEnc->sCmn.nb_subfr; i++ ) { 86 for( i = 0; i < psEnc->sCmn.nb_subfr; i++ ) {
86 silk_scale_copy_vector_FLP( x_pre_ptr, x_ptr, invGains[ i ], 87 silk_scale_copy_vector_FLP( x_pre_ptr, x_ptr, invGains[ i ],
87 psEnc->sCmn.subfr_length + psEnc->sCmn.predictLPCOrder ); 88 psEnc->sCmn.subfr_length + psEnc->sCmn.predictLPCOrder );
88 x_pre_ptr += psEnc->sCmn.subfr_length + psEnc->sCmn.predictLPCOrder; 89 x_pre_ptr += psEnc->sCmn.subfr_length + psEnc->sCmn.predictLPCOrder;
89 x_ptr += psEnc->sCmn.subfr_length; 90 x_ptr += psEnc->sCmn.subfr_length;
90 } 91 }
91 silk_memset( psEncCtrl->LTPCoef, 0, psEnc->sCmn.nb_subfr * LTP_ORDER * s izeof( silk_float ) ); 92 silk_memset( psEncCtrl->LTPCoef, 0, psEnc->sCmn.nb_subfr * LTP_ORDER * s izeof( silk_float ) );
92 psEncCtrl->LTPredCodGain = 0.0f; 93 psEncCtrl->LTPredCodGain = 0.0f;
93 » » psEnc->sCmn.sum_log_gain_Q7 = 0; 94 psEnc->sCmn.sum_log_gain_Q7 = 0;
94 } 95 }
95 96
96 /* Limit on total predictive coding gain */ 97 /* Limit on total predictive coding gain */
97 if( psEnc->sCmn.first_frame_after_reset ) { 98 if( psEnc->sCmn.first_frame_after_reset ) {
98 minInvGain = 1.0f / MAX_PREDICTION_POWER_GAIN_AFTER_RESET; 99 minInvGain = 1.0f / MAX_PREDICTION_POWER_GAIN_AFTER_RESET;
99 } else { 100 } else {
100 minInvGain = (silk_float)pow( 2, psEncCtrl->LTPredCodGain / 3 ) / MAX_P REDICTION_POWER_GAIN; 101 minInvGain = (silk_float)pow( 2, psEncCtrl->LTPredCodGain / 3 ) / MAX_P REDICTION_POWER_GAIN;
101 minInvGain /= 0.25f + 0.75f * psEncCtrl->coding_quality; 102 minInvGain /= 0.25f + 0.75f * psEncCtrl->coding_quality;
102 } 103 }
103 104
104 /* LPC_in_pre contains the LTP-filtered input for voiced, and the unfiltered input for unvoiced */ 105 /* LPC_in_pre contains the LTP-filtered input for voiced, and the unfiltered input for unvoiced */
105 silk_find_LPC_FLP( &psEnc->sCmn, NLSF_Q15, LPC_in_pre, minInvGain ); 106 silk_find_LPC_FLP( &psEnc->sCmn, NLSF_Q15, LPC_in_pre, minInvGain );
106 107
107 /* Quantize LSFs */ 108 /* Quantize LSFs */
108 silk_process_NLSFs_FLP( &psEnc->sCmn, psEncCtrl->PredCoef, NLSF_Q15, psEnc-> sCmn.prev_NLSFq_Q15 ); 109 silk_process_NLSFs_FLP( &psEnc->sCmn, psEncCtrl->PredCoef, NLSF_Q15, psEnc-> sCmn.prev_NLSFq_Q15 );
109 110
110 /* Calculate residual energy using quantized LPC coefficients */ 111 /* Calculate residual energy using quantized LPC coefficients */
111 silk_residual_energy_FLP( psEncCtrl->ResNrg, LPC_in_pre, psEncCtrl->PredCoef , psEncCtrl->Gains, 112 silk_residual_energy_FLP( psEncCtrl->ResNrg, LPC_in_pre, psEncCtrl->PredCoef , psEncCtrl->Gains,
112 psEnc->sCmn.subfr_length, psEnc->sCmn.nb_subfr, psEnc->sCmn.predictLPCOr der ); 113 psEnc->sCmn.subfr_length, psEnc->sCmn.nb_subfr, psEnc->sCmn.predictLPCOr der );
113 114
114 /* Copy to prediction struct for use in next frame for interpolation */ 115 /* Copy to prediction struct for use in next frame for interpolation */
115 silk_memcpy( psEnc->sCmn.prev_NLSFq_Q15, NLSF_Q15, sizeof( psEnc->sCmn.prev_ NLSFq_Q15 ) ); 116 silk_memcpy( psEnc->sCmn.prev_NLSFq_Q15, NLSF_Q15, sizeof( psEnc->sCmn.prev_ NLSFq_Q15 ) );
116 } 117 }
117 118
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